Chilling new recordings of Borce Ristevski's phone conversations have been unearthed. The never-before-heard recordings depict the complex web of lies he concocted in a bid to escape being caught after murdering his wife, Karen.

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Last week, the Victorian Supreme Court ruled Borce Ristevski had purposely attempted to mislead police and conceal his actions before pleading guilty to manslaughter last Wednesday.

As reported by Daily Mail Australia, 55-year-old Ristevski told family and friends the authorities were listening to his phone calls and according to court documents he changed his mobile number twice in the months following Karen's disappearance.

In a call to a close friend, Ristevski is heard saying: "Make sure you don't say anything...don't tell them I spoke to you about anything nothing at all."

The father-of-two also told the couple's daughter Sarah not to trust police, declaring they "don't give a f**k".

He convinced her boyfriend to buy a new SIM card on his behalf so the purchase would not be traced back.

Ms Ristevski vanished from her home in Avondale Heights, 12km north-west of Melbourne in 2016. Her body wasn’t discovered until eight months later buried in a shallow grave in a bushland in Macedon Regional Park.

The court documents also showed Ristevski's couldn't keep up with his web of lies and changed his story at least three times.

In his first account of the day his wife disappeared Ristevski said the couple had argued over finances and she had gone upstairs to cool off.

But he later changed his story and said she left the premises straight away through the front door.

Changing tactics once again, Borce went on to say she left through the garage.

Ristevski will return to the Supreme Court of Victoria for a pre-sentencing plea hearing later this month.